Visara SCON-20L Installation - Manual (Page 93)

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Appendix A. Glossary of Terms
MLS - Multiple Logical Sessions. This feature of the SCON allows a single CUT
device such as a coax terminal to have up to 10 sessions simultaneously. The user
switches between these sessions through the use of a session swap hot key.
NIP Console - Nucleus Initialization Program console. This is an MVS console used
for a short period during initial startup, assigned through the HCD. If more than one
NIP console is defined, the first active console in the list will be used, the rest in the list
are used as alternate consoles. If the first active breaks communication with the host,
the NIP function will pass to the next active alternate in the list. Once the Multiple
Console Support function comes up, the NIP console function ceases, and all other
MVS consoles come active. (It is common to define the NIP console device to also
function as the MVS master console.
Parallel Sysplex - Multiple mainframes or LPARs present a single system image to
the user.
PCHID – Physical Channel Identifier, found on CPUs with multiple logical channel
subsystems (LCSS). The logical channels of each LCSS gets mapped to a physical
channel, or PCHID.
PR/SM - Processor Resource/Systems Manager. Feature that allows for the configuration
of multiple LPARs on a CPU.
RFC - Request for Comment. This refers to the specification documents used to describe
most protocols and procedures associated with the TCP/IP environment.
Shared Session – A session where two or more users are able to provide input and view
output at the same time.
Silo - Automated tape library product sold by StorageTek.
Support Element - PC directly attached to the mainframe that provides the mainframe
with the initial configuration and acts as the initial console at IPL time.
TN3270E – Emulation that provides a 3270 session using Telnet as the interface. The
letter ‘E’ indicates compliance with RFC 1647, which describes enhancements over
RFC 1576 (TN3270).
Virtual Private Network (VPN) - A session established across a public network, using
encryption to keep the session private.
VTAM Terminal – Terminal that communicates with an application, accessed through
VTAM.
Visara – Vision of the Future